Grate section



Oct. 5,1926. 1,602,030

J. A. LANSING GRATE SECTION Filed A rile. 1926 '9 'IIIIIIIIII/I/IIIII/II/IA ufimesALamby Patented Oct. 5,1926.

warren stares JAMES A. LANSING, OF SOB-ANTON,

EENNSYLVANIA, ASSIGNOR TO SCRANTON STOVE WORKS, OF SCRANTON, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

GnA'rE snc'rron.

Application filed April e, 1926.

furnace conthe fuel supirnown as the This invention relates to struction and particularly to porting elements commonly grate sections,

Usually the fuel supporting means in furnace construction consist of a plurality of grate bars on each of which there is mounted a series of longitudinally spaced grate sections, the sections on adjacent bars being so positioned with respect to one another as to form fuel may be supported in suchwise as to permit the passage therethrough of the required] amount of air to properly support"combustion. Heretofore, it is believed that in most instances, if not all, the grate sections have been mounted on the grate bars in such fashion that if one of the sections located at, an intermediate point on the bar should breal: or wear out so as placement it has been necessary to remove from the bar not only the broken or worn section but all of the sections between it and the end of the bar.

With such prior constructions as these in mind the present invention contemplates the provision of a grate section that can be removed from the grate bar if it should break or wear but without necessitating the removal of any of the other sections carried by that particular bar. This result is preferably accomplished by made up of a plurality of partswhich can be connected together to form a complete grate section. v

A further object is to provide means for connecting together the parts of the section that will not only function as connecting elements but will serve to lend strength to thesection. In other words, although the section is not an integral structure it possesses substantially the same result as would an integral one. In this connection it is also preferred that the parts of the sectionbe so formed as to permit their assembly on the grate bar or their removal therefrom by simply moving the two parts of the section away from each other longitudinally of the grate bar. Means are, of course, employed for locking the two sections together when they are mounted on the bar and in removing a section it would, therefore, be necessary to remove such locking means before the two parts of the section could be separated from one another.

a surface on which the to necessitate a rehaving the section Serial so: 100,151.

A. still further object of the invention is to provide detachable locking means for locking the two portions of the grate section together, and, in addition to such locking means there is also provided a supplemental locking meanswhich will temporarily lock the two sections together after they have been assembled on the grate bar. Said supplemental locking means are also 'so constructed that the cooperating locking elements on the two parts of the'grate section will firmly clamp the assembled grate sections on the bars. This is quite advantageous in that after the two parts have been moved together in their assembled position the temporary means will support the lowermost part in its assembled position until such time that the detachable permanent locking means can be applied.

With these and other objects in view the presentv invention consists in certain novel details of construction and combinations and arrangements of parts all as, will be hereinafter more fully described and the novel features thereof particularly pointed out in the appended claims.

I In the accompanying drawings,

Figure 1 is a top plan view of agrate bar having a plurality of grate section s mounted thereon, it being understood that a number of bars and sections of this character are assembled to produce a complete grate. V

Fig. 2 is a side elevation of a grate section h ade in accordance with the present invenlOIl.

, Fig. 3 is a similar view of one of the two half portions of the grate section.

I Fig. i is a sectional view on the line H of Fig. 3. g

Fig. 5 is .a sectional viewon the line 55 of Fig. 3.

The grate sections which are mounted onv the grate bars 10 will be referred to in the ensuing description as the grate members in order to avoid confusion when reference is made to the sections composing such members, it being believed that confusion might arise if the members 10 were referred to as sectional grate sections. It will be understood that the grate bars may be of any desired cross section but in the present instance they are shown circular, the grate members being held against rotation on the bars by a lrey 11 which engages in the usual key slot in said bars. This key 11 may be formed on either of the two sections composing the grate member. In the embodiment of the invention illustrated the grate members are each formed in two sections 1?, 12 of substantially duplicate design whereby the bars may be rotated to invert the members by giving them a one-half revolution when it is desired to dump or r move the ashes from the bottom of the bed of the tire. At its longitudinal center each section has a substantially semi-circular bearing surface 13 which engages the grate bar 10 and the two sections of said member are each provided with connecting members or lugs 14-, 15 the member 1a of one section being adapted to overlap the member 15 of the other section when the entire member is assembled on the bar. It will be observed that these connecting members are formed so as to merge into that portion of the section which form the bearing 13, acting substantially as a reinforcing web which extends substantially entirely across the assembled member so that when the two overlapping connecting members are secured together the entire grate member will possess the required strength.

l rovided in each pair of overlapping cooperating lugs or members 14, 15 are apertures 16 which are alined with each other when the two .sections 12 12 a e assembled on the grate bar and to firmly secure the assembled sections on said bar suitable locking means 17 are adapted to be placed in said alined openings and detachably secured therein. These locking means are substantially permanent in that they are not removed until it is desired to actually remove the grate member from the grate bar. In at dition to these so-called permanent locking means there are additional locking means by which the two sections 12*, 12 are temporarily held together when first assembled on the grate bar in order that the lower section will be properly suspended in its assembled position until the permanent means 17 can be installed. These supplemental locking means may take Varied forms but the most economical and conven ient arrangement is believed to consist in having one connecting member of each section provided with a lateral projection 18 which will enter an aperture or recess 19 in the cooperating overlapping connecting member of the other section. In the present instance these lateral projections 18 are shown formed integral wit-h the connecting m mbers 15 and the apertures or recesses 19 in which said projections enter are shown formed in the comiecting members 14:. In this, the preferred form, the projections 18 are of trusto-conical formation, whereby, when the projections are entered in the cooperating apertures 19 and engage the walls of said apertures they will have a wedging action which will result in the two grate'sections being clamped firmly on the grate bars, thereby preventing the assembled sections being displaced longitudinally of the bars.

Once the grate members have been assembled on the grate bars there is usually no occasion to remove them unless they'have been broken or worn in which event, with members constructed in accordance with the present invention, it is only necessary to remove the loclring means two sections 1%, 12* are moved away from each other longitudinally of the bar until the projections 18 are'withdrawn trom the apertures 19. The under to drop from the grate bar and the upper section may readily be lifted from said bar. By thusbeing able to remove the sectional member any member regardless of its location on the bar may be replaced without the necessity of removing any other member on the bar. The advantages of this are obvious as it is apparent that considerable time of one quired to members especially if a member longitudinal center or a bar should be broken so as to render it necessary to remove all of the other members on said bar between the broken member and the end of said bar, such as would be the case where integral grate members that had to be slipped lengthwise on said bar were used; In the present instance only a slight movement of the sections of the member longitudinally of the bar is necessary, this movement of the sections away from each other being considerably less than the distance between any two adjacent members on the bar. In addition to the foregoing the member in the present instance is so constructed as to possess substantially the same amount of strength as would be possessed by an'integral member. Further, by the peculiar arrangement of locking means for securing the two sections of members together the assembly of the sections on the bar is greatly facilitated.

l Vhat I claim is:

1. In a furnace construction, the combina tion of a grate bar, a series of fuel supporting gratermembers mounted on said bar at longitudinally spaced points, each of said members comprising a pair of sections and removable fastening means connecting said sections and wedging elements firmly mounting the assembled sections on said bar in spaced relation to each other, each of said sections being removable from the bar by removal of said fastening means and movement of the two sections away from .each other longitudinally of the bar a distance less than that between adjacent members on the bar.

2. In a furnace construction, the combina- 17 whereupon the section is then free or more persons would be red replace broken or worn grate near the ice tion of agrate bar, a series of fuel supporting grate members mounted on said bar at longitudinally spaced points, each of said members comprising a pair of sections, removable fastening means connecting said sections and firmly locking the assembled sections on the bar, and supplemental fastening means connecting said section to retain them on the bar preliminary to the application of said removable fastening means, each pair of assembled sections being removable from the bar by removing the removable fastening means and moving the two sections away from each other longitudinally of the bar a distance less than that between adjacent members to disengage the temporary fastening means.

3. A grate member comprising a pair of sections each having a grate bar receiving recess therein, adapted to completely surround said grate bar, cooperating connecting lugsion the two sections, temporary securing means carried by said lugs for initially maintaining the two sections in assembled position on said grate bar, and detachable locking means for firmly securing the assembled sections on said bar.

l. A grate member comprising a pair of sections, each section having a bearing surface for mounting it on a grate bar, 00- operating connecting the combined recesses being lugs on said sections I overlap when the two sections are assembled on the grate bar, means formed on each of the overlapping lugs for preliminarily connecting the two sections together when assembled on the grate bar, and additional connecting means for firmly mounting the assembled sections on said bar.

5. A grate member composed of a pair of sections having grate bar bearing surfaces capable of conjointly completely surrounding a grate bar, cooperating connecting lugs on the two sections, detachable means extending through said lugs for firmly attaching the two sections on said bar, and supplemental connecting means for preliminarily retaining the two sections in assembled position on said bar.

6. A grate member composed of a pair of sections each provided with a semi-circular bearing for a grate bar, a pair of connecting lugs on one section adapted to overlap similar lugs on the other section, one lug of each section having a projection adapted to eX- tend through aperforation in the overlapping lug of the other section for preliminarily locking the two sections together in adapted to assembled position on the grate bar, and per-r manent locking elements extending through ahned apertures 1n the overlapping lugs for firmly securing the assembled sections on said bar.

JAMES A, LANSING. 

